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README.md

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Setup

If using vscode, you should install the extensions recommended in .vscode/extensions.json.

Running programs

./scripts game_of_life

Memory Layout

NB this differs slightly from the layout described in the book - the heap has been expanded to 16k words. This makes the implementation of the buddy heap allocation algorithm much simpler.

Also, my TEMP segment is smaller, and I have more virtual registers.

address range use
0 SP
1 LCL
2 ARG
3 POINTER TO THIS
4 POINTER TO THAT
5-6 TEMP - FOR USE IN VM CODE
7-15 VIRTUAL REGISTERS
16-255 STATIC
256-2047 STACK
2048-18431 HEAP
18432-26623 SCREEN MMO
26624 KBD MMI
26625-30424 GLYPHS
30425 LEDS MMO
30426-32767 FREE FOR FUTURE USE

### Stack Frame Layout

ARGUMENTS RETURN ADDRESS SAVED CALLER POINTERS LOCALS TEMPORARY VALUES / RETURN VALUE